/* ===========================
   Grifo Control (tokens: css/theme.css)
=========================== */

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    letter-spacing: -0.01em;
    background:
        radial-gradient(1000px 520px at 0% 0%, color-mix(in srgb, var(--diesel) 10%, transparent), transparent 50%),
        radial-gradient(800px 400px at 100% 10%, color-mix(in srgb, var(--gasohol) 8%, transparent), transparent 45%),
        var(--surface-muted);
    color: var(--text);
    min-height: 100vh;
    padding: 0;
}

/* ===========================
   HEADER
=========================== */
.header {
    background: linear-gradient(180deg, var(--primary-soft) 0%, var(--primary) 100%);
    color: #fff;
    padding: 0.875rem clamp(1rem, 3vw, 1.75rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid color-mix(in srgb, #fff 10%, transparent);
    box-shadow: var(--shadow-md);
}

.header-title {
    font-size: var(--text-sm);
    font-weight: 700;
    letter-spacing: var(--tracking-wide);
    color: var(--text-faint);
    text-transform: uppercase;
}

.header-title span { color: #fff; }

.date-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.date-nav input[type="date"] {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: .85rem;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    outline: none;
    cursor: pointer;
    transition: border-color .2s, box-shadow .2s;
}

.date-nav input[type="date"]:focus-visible {
    border-color: var(--accent);
    box-shadow: var(--ring);
}

/* ===========================
   BUTTONS
=========================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: .875rem;
    padding: 10px 18px;
    transition: all .18s;
    text-decoration: none;
    white-space: nowrap;
    line-height: 1;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover { background: var(--accent-hover); }

.btn-save {
    background: var(--success);
    color: #fff;
}

.btn-save:hover { background: #047857; }

.btn-ghost {
    background: #e2e8f0;
    color: var(--text);
}

.btn-ghost:hover { background: #cbd5e1; }

/* ===========================
   LAYOUT
=========================== */
.main {
    max-width: 1140px;
    margin: 0 auto;
    padding: 24px 20px 32px;
}

.date-badge {
    font-family: var(--font-mono);
    font-size: .78rem;
    color: var(--text-muted);
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.date-badge::before {
    content: '';
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #22c55e;
}

.products-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin-bottom: 20px;
}

/* ===========================
   CARDS
=========================== */
.product-card,
.summary-panel {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.product-card { overflow: hidden; }

.card-header {
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
}

.card-header-diesel { border-left: 4px solid var(--diesel); }
.card-header-gasohol { border-left: 4px solid var(--gasohol); }

.card-title {
    font-size: .72rem;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.card-title-diesel { color: var(--diesel); }
.card-title-gasohol { color: var(--gasohol); }

.card-date-tag {
    font-family: var(--font-mono);
    font-size: .72rem;
    color: var(--text-muted);
    background: var(--surface-2);
    padding: 4px 8px;
    border-radius: 999px;
    border: 1px solid var(--border);
}

.card-body { padding: 18px; }

.section-label {
    display: block;
    font-size: .72rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .04em;
    margin-bottom: 10px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

.fields-grid {
    display: grid;
    gap: 10px;
    margin-bottom: 16px;
}

.field-row,
.total-row {
    display: grid;
    grid-template-columns: 1fr 140px;
    align-items: center;
    gap: 12px;
}

.field-label {
    font-size: .88rem;
    color: var(--text-muted);
}

.field-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    font-family: var(--font-mono);
    color: var(--text);
    background: var(--surface);
    text-align: right;
    outline: none;
    transition: border-color .2s, box-shadow .2s;
}

.field-input:focus-visible {
    border-color: var(--accent);
    box-shadow: var(--ring);
}

.field-input[readonly] {
    border-color: transparent;
    background: transparent;
    color: var(--text);
    cursor: default;
    box-shadow: none;
}

.total-row {
    padding-top: 10px;
    border-top: 1px solid var(--border);
    margin-top: 4px;
}

.total-label {
    font-size: .88rem;
    font-weight: 700;
    color: var(--text);
}

.total-value {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    text-align: right;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    background: var(--surface-2);
    border: 1px solid var(--border);
}

.divider { height: 1px; background: var(--border); margin: 16px 0; }

.diferencia-box {
    background: var(--surface-2);
    border-radius: var(--radius-sm);
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-top: 16px;
    border: 1px solid var(--border);
}

.dif-label {
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.dif-formula {
    font-family: var(--font-mono);
    font-size: .72rem;
    color: var(--text-muted);
}

.dif-value {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 700;
}

.dif-positive { color: var(--success); }
.dif-negative { color: var(--danger); }
.dif-zero { color: var(--text-muted); }

.summary-panel {
    padding: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 20px;
}

.summary-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.summary-item-label {
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.summary-item-value {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
}

.actions-bar {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
}

/* ===========================
   STATUS / LOADER
=========================== */
.status-msg {
    font-size: var(--text-sm);
    font-family: var(--font-mono);
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    display: none;
}

.status-ok   { background: var(--success-lt); color: var(--success); display: inline-block; border: 1px solid #a7f3d0; }
.status-err  { background: var(--danger-lt); color: var(--danger); display: inline-block; border: 1px solid #fecaca; }
.status-load { background: var(--diesel-lt); color: var(--diesel); display: inline-block; border: 1px solid var(--diesel-bd); }

.loader {
    display: none;
    align-items: center;
    gap: 8px;
    font-size: var(--text-sm);
    color: var(--text-faint);
    font-family: var(--font-mono);
}

.spinner {
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255,255,255,.2);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin .7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.config-banner {
    background: var(--warning-lt);
    border: 1px solid #fde68a;
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: .78rem;
    color: #92400e;
    font-family: var(--font-mono);
    margin-bottom: 20px;
    min-height: 44px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 1024px) {
    .main {
        padding: clamp(16px, 3vw, 24px) clamp(14px, 3vw, 22px) 2rem;
        max-width: min(1140px, 100%);
    }
    .products-grid {
        gap: clamp(14px, 2.5vw, 18px);
    }
    .header .date-nav {
        flex-wrap: wrap;
        justify-content: flex-end;
    }
}

@media (max-width: 768px) {
    body {
        overflow-x: clip;
    }

    .header {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
        padding: 0.75rem var(--page-inline, clamp(12px, 4vw, 18px));
        padding-top: max(0.65rem, env(safe-area-inset-top, 0px));
    }

    .header-title {
        font-size: max(0.78rem, 11px);
        line-height: 1.35;
        word-break: break-word;
    }

    .date-nav {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        width: 100%;
        gap: 0.5rem;
        align-items: center;
    }
    .date-nav .loader {
        grid-column: 1 / -1;
        justify-content: center;
        width: auto;
    }
    .date-nav input[type="date"] {
        grid-column: 1 / -1;
        min-width: 0;
        min-height: var(--touch-target, 44px);
        font-size: 1rem;
    }
    .date-nav .btn {
        min-height: var(--touch-target, 44px);
        width: 100%;
        font-size: max(0.8rem, 12px);
    }

    .main {
        padding: var(--page-inline, clamp(12px, 4vw, 18px));
        padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 1.5rem);
    }

    .products-grid,
    .summary-panel {
        grid-template-columns: 1fr;
    }

    .summary-panel {
        padding: 1rem;
    }

    .product-card {
        min-width: 0;
    }

    .field-row,
    .total-row {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .field-label {
        font-size: max(0.8rem, 12px);
    }

    .field-input {
        min-height: var(--touch-target, 44px);
        font-size: 1rem;
    }

    .diferencia-box {
        flex-direction: column;
        align-items: stretch;
        gap: 0.65rem;
    }

    .dif-value {
        text-align: right;
        font-size: clamp(1.15rem, 5vw, 1.5rem);
    }

    .actions-bar {
        flex-direction: column-reverse;
        align-items: stretch;
        gap: 0.65rem;
        margin-top: 1.25rem;
    }
    .actions-bar .btn {
        min-height: var(--touch-target, 44px);
        width: 100%;
    }
    .actions-bar .status-msg {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .card-title {
        font-size: max(0.68rem, 10px);
    }
    .total-value {
        font-size: 0.95rem;
    }
}